WASHINGTON — The U.S. government leveled sanctions against a yacht management company and its owners, describing them as part of a corrupt system that allows Russian elites and President Vladimir V. Putin to enrich themselves, the Treasury Department announced on Thursday.
Imperial Yachts, which is based in Monaco and controlled by the Moscow-born Evgeniy Kochman, caters to Russian oligarchs. The Treasury Department said Mr. Kochman and his…